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Harpreet Kaur
Questions (1)
If a1,a2,a3 represents first, second, third terms in A.P. if the first term is 2 and (a1 + a2 ) a3 is minimum then
the common
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Answers (1)
What is the sum of the arithmetic sequence 22, 13, 4 … if there are 28 terms? sum of 28 terms = 28/2[2*22+27*9] = 14 [44=243] = 14*287 = 4014 .. Sum of n terms = n/2[2a+(n-1)d] Where n= number of terms a= First term , d= Common difference
